summaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.c-torture/execute/ieee/fp-cmp-1.c
diff options
context:
space:
mode:
authorYamaArashi <shadow962@live.com>2016-01-06 01:47:28 -0800
committerYamaArashi <shadow962@live.com>2016-01-06 01:47:28 -0800
commitbe8b04496302184c6e8f04d6179f9c3afc50aeb6 (patch)
tree726e2468c0c07add773c0dbd86ab6386844259ae /gcc/testsuite/gcc.c-torture/execute/ieee/fp-cmp-1.c
initial commit
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/ieee/fp-cmp-1.c')
-rwxr-xr-xgcc/testsuite/gcc.c-torture/execute/ieee/fp-cmp-1.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/ieee/fp-cmp-1.c b/gcc/testsuite/gcc.c-torture/execute/ieee/fp-cmp-1.c
new file mode 100755
index 0000000..4794efc
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/ieee/fp-cmp-1.c
@@ -0,0 +1,41 @@
+#include <signal.h>
+
+double nan = 1.0/0.0 - 1.0/0.0;
+double x = 1.0;
+
+void leave ()
+{
+ exit (0);
+}
+
+main ()
+{
+#if ! defined (__vax__) && ! defined (_CRAY)
+ /* Move this line earlier, for architectures (like alpha) that issue
+ SIGFPE on the first comparisons. */
+#ifndef SIGNAL_SUPPRESS
+ /* Some machines catches a SIGFPE when a NaN is compared.
+ Let this test succeed o such machines. */
+ signal (SIGFPE, leave);
+#endif
+ /* NaN is an IEEE unordered operand. All these test should be false. */
+ if (nan == nan)
+ abort ();
+ if (nan != x)
+ x = 1.0;
+ else
+ abort ();
+
+ if (nan < x)
+ abort ();
+ if (nan > x)
+ abort ();
+ if (nan <= x)
+ abort ();
+ if (nan >= x)
+ abort ();
+ if (nan == x)
+ abort ();
+#endif
+ exit (0);
+}